Abstract: A hydropneumatic accumulator includes a shell in which gas and fluid ports are connected, respectively, with gas and fluid reservoirs of variable volume separated by a movable separator. The gas reservoir contains a compressible regenerator that fills the gas reservoir so that the separator movement reducing the gas reservoir volume compresses the regenerator. The regenerator is made from leaf elements located transversally to the separator motion direction and dividing the gas reservoir into intercommunicating gas layers of variable depths. The regenerator is preferably made from interconnected elastic metal leaf elements to allow variation of the bending strain degree so that the local bending strains of the leaf elements should not exceed the elastic limits at any position of the separator. The efficiency of fluid power recuperation and durability of the regenerator are increased.

Abstract: A hydropneumatic accumulator with a flexible porous filler intended for fluid power recuperation in hydraulic systems with a high level of pulsations includes a shell where a gas port and a fluid port are connected, respectively, with a gas reservoir and a fluid reservoir of variable volume separated by a movable separator. The flexible porous filler fills the gas reservoir so that the separator movement reducing the gas reservoir volume compresses said filler. The filler is connected with internal walls of the gas reservoir with the possibility of stretching the filler at the separator movement increasing the volume of the gas reservoir. The accumulator contains means of protection of the filler boundary layer against rupture made with the possibility of reducing local deformations of the boundary filler layer in case of jerks of the separator.

Abstract: A hydropneumatic accumulator includes a shell in which gas and fluid ports are connected, respectively, with gas and fluid reservoirs of variable volume separated by a movable separator. The gas reservoir contains a compressible regenerator that fills the gas reservoir so that the separator movement reducing the gas reservoir volume compresses the regenerator. The regenerator is made from leaf elements located transversally to the separator motion direction and dividing the gas reservoir into intercommunicating gas layers of variable depths. The regenerator is preferably made from interconnected elastic metal leaf elements to allow variation of the bending strain degree so that the local bending strains of the leaf elements should not exceed the elastic limits at any position of the separator. The efficiency of fluid power recuperation and durability of the regenerator are increased.

Abstract: A hydropneumatic accumulator with a flexible porous filler intended for fluid power recuperation in hydraulic systems with a high level of pulsations includes a shell where a gas port and a fluid port are connected, respectively, with a gas reservoir and a fluid reservoir of variable volume separated by a movable separator. The flexible porous filler fills the gas reservoir so that the separator movement reducing the gas reservoir volume compresses said filler. The filler is connected with internal walls of the gas reservoir with the possibility of stretching the filler at the separator movement increasing the volume of the gas reservoir. The accumulator contains means of protection of the filler boundary layer against rupture made with the possibility of reducing local deformations of the boundary filler layer in case of jerks of the separator.

Abstract: The invention can be used as a high pressure rotor vane pump or hydro motor. Rotor vane machine comprises a rotor including working and supporting parts connected via force chambers of variable length so that they rotate synchronously with a possibility of little reciprocal axial movements and tilts required to provide sliding insulating contact of face surfaces of the working and supporting pans of the rotor with the surfaces of the working and supporting cover plates of the housing correspondingly. Between the supporting cover plate of the housing and supporting part of the rotor there are made supporting cavities hydraulically connected via the means of local pressures balancing to the force chambers of variable length and cavities of the working chamber in the annular groove of the working part of the rotor. The losses on friction and cavitation decrease and the reliability increases.

Abstract: The invention refers to mechanical engineering and can be used for reducing the level of vibrations and noise caused by pulsations of the fluid flow generated by a rotor sliding-vane machine. A method of generating a surgeless fluid flow by rotating the rotor of the rotor sliding-vane machine, separating the fluid in the transfer cavities from the inlet cavity by the vanes, transference the transfer cavities to the outlet cavity of the machine, merging them with the outlet cavity followed by the fluid displacement characterized by that the volumes of the transfer cavities and fluid pressure in them are varied in the process of the transference so that the mentioned pressures are substantially equalized with the outlet pressure by the moment when the transfer cavities are merged with the outlet cavity. A rotor sliding-vane machine with a working chamber in the annular groove on the face of the rotor comprising vanes in the vane chambers and force chambers of variable volume.

Abstract: The invention refers to mechanical engineering and can be used as a high pressure rotor sliding-vane machine with surgeless delivery capable to work both as a pump and as a hydro motor. The objective of the present invention is to overcome the origins generating the high dissipative losses of power and to increase the reliability of machine by creating the means of hydrostatic balancing of the rotor and sliding sealing. Said means are resistant to the wear of the machine elements and to the working fluid contamination and are compatible with the means of overcoming cavitation in vane chambers.